Home / 389,365.85-537,439.79-228,255.77

Finding the Fourth Proportional to 389,365.85, 537,439.79 and 228,255.77

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Solution

The fourth proportional to 389,365.85, 537,439.79 and 228,255.77 is: 315,060.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,365.85 : 537,439.79 = 228,255.77 : x
  2. Step 2: Convert to fraction form
    389,365.85/537,439.79 = 228,255.77/x
  3. Step 3: Cross multiply
    389,365.85x = 537,439.79 × 228,255.77
  4. Step 4: Simplify right side
    389,365.85x = 122,673,733,095.09
  5. Step 5: Solve for x
    x = 122,673,733,095.09/389,365.85
  6. Step 6: Final answer
    x = 315,060.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.